An integrated device for dewatering, spring preservation and refilling in foundation pit engineering

Abstract

The invention discloses a water settling, spring protection and recharging integrated device for foundation pit engineering. The water settling, spring protection and recharging integrated device is characterized in that one end of a recharging water quality treatment system is connected with a water settling well, the other end of the recharging water quality treatment system is sequentially and serially connected with a water quality monitoring system, a pressurizing and water collecting system, a wellhead device and a recharging well, and the water quality of the sucked underground water is analyzed by the recharging water quality treatment system and the water quality monitoring system; when the recharging water quality requirement is met, the recharging water enters the pressurizing and water collecting system, and the water of the pressurizing and water collecting system enters the recharging well through the recharging wellhead device at fixed flow rate and fixed pressure; when the recharging water quality requirement is not met, the recharging water flows back to the recharging water quality treatment system, and the water quality is analyzed and treated again. The water settling, spring protection and recharging integrated device has the beneficial effects that by utilizing the underground water recharging technique, the stability of the underground water level near the construction area can be effectively controlled, the deformation of adjacent stratum is prevented, and the safety threat of construction on the neighboring residents is reduced.

Description

technical field [0001] The invention relates to the technical field of dewatering and recharging of foundation pits, in particular to an integrated device for dewatering and protecting springs for foundation pit engineering. Background technique [0002] In the past, water-stop curtains were generally used in the construction of regional foundation pits with a large amount of water inflow. However, the water-stop curtains for ordinary deep foundation pits are expensive, and the water-stopping effect of confined water and micro-confined water is poor, and there have been many flooding accidents. Recharge technology first appeared in the foundation pit dewatering areas in Shanghai and other domestic hydrogeological complex areas, but for areas with unique hydrogeological conditions, such as high water level and small head difference, the ordinary direct recharge technology is far from satisfying the foundation. Pit dewatering well water inflow, ordinary pressurized recharge wi...

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Problems solved by technology

[0004] At present, the main problem area is the Quaternary aquifer, which has good water-richness, large water inflow, and high water level. , the ordinary well-forming process will cause rock well wall overflow, and the ordinary direct recharge technology may also damage the groundwater system and affect the quality of groundwater

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